Preserve | Preserve

Fonte | Source : http://www.google.com.br/imgres?imgurl=http://www.expressivaonline.com.br/fotos/telaMeioAmbientegd.jpg&imgrefurl=http://www.expressivaonline.com.br/produto.asp%3FidSelecionado%3D44&usg=__fnw-P4_XUQIKes3tSm9Jf6KMZ9Y=&h=420&w=550&sz=37&hl=pt-BR&start=178&sig2=SoJY39YXI1gdcKBlOXkYaw&zoom=1&tbnid=TDcS3IUD6YIzaM:&tbnh=157&tbnw=206&ei=1NTCTa6TPMKhtwfzz8DFBQ&prev=/search%3Fq%3DMeio%2BAmbiente%26hl%3Dpt-BR%26sa%3DX%26biw%3D1916%26bih%3D874%26tbm%3Disch0%2C3721&itbs=1&iact=hc&vpx=143&vpy=583&dur=1186&hovh=196&hovw=257&tx=178&ty=149&page=6&ndsp=40&ved=1t:429,r:31,s:178&biw=1916&bih=874